Follow us on

About this programme

2/5. The actor and comedian explores waterways in the north of England, beginning in Liverpool, where he tries to swim across a mile-wide stretch of the River Mersey, before going underground to help clean up the UK's network of hidden rivers. He then heads to Manchester, follows the Derwent across the Pennines, and makes his way to the port of Hull using what was once one of Britain's most important shortcuts.